Device for determining the rotary angle position of rotary drive

Details Device for determining the rotary angle position of rotary drive Device for determining the rotary angle position of rotary drive

1988-04-15

1991-01-08

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Magnetic

Displacement

32420722, 32420725, 324173, G01B 730, G01P 3488, H01F 500

Patent

active

049839152

ABSTRACT:
A device for determining the rotary-angle position of rotary drives which can also determine the rotary speed. A magnet rotor generating a rotating magnetic field is provided for the purpose of determining the rotary speed with a cam disc suited for screening magnetic field lines, and to arrange coacting inductive transmitter and receiver heads on both sides of the cam disc, for determining the rotary-angle position. Due to the fact that the electromagnetic radiation emitted by the transmitter head is screened, the output signal of the receiver heads obtained is an envelope-modulated signal which can be evaluated for determining the position, for example by phase comparisons with additional envelope-modulated output signals of other receiver heads. The axial magnetization lines emanating simultaneously from the magnet rotor serve for inducing electric voltages in flat coils arranged axially before the magnet rotor, in overlapping annular shape.

REFERENCES:
patent: 3090933 (1963-05-01), Henry-Baudot
patent: 3205485 (1965-09-01), Noltingk
patent: 3611813 (1971-10-01), Brocker
patent: 3742340 (1973-06-01), Kiedrowski
patent: 3995156 (1976-11-01), Angersbach et al.
patent: 4013911 (1977-03-01), Fujiwara et al.
patent: 4156192 (1979-05-01), Schedrovitsky et al.
patent: 4293837 (1981-10-01), Jaffe et al.
patent: 4507638 (1985-03-01), Brosh

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